Delete an Email Message
Marketing Cloud has a new model for storing, finding, managing, creating, sharing, and distributing all content-related objects. Access the objects created with the new Content Builder tools using the REST API. Your existing SOAP API integrations only function with the Classic tools in the user interface.
Use the Delete method to delete an email message. Specify a unique identifier needs to be specified in the props properties in order to identify which email message to update:
Documentation for the Fuel Java SDK can be found at http://salesforce-marketingcloud.github.io/FuelSDK-Java/